Guides / SWPPP requirements in Wilson County (Lebanon, Mt. Juliet)

SWPPP requirements in Wilson County (Lebanon, Mt. Juliet)

State coverage plus a local Land Disturbance Permit, with Lebanon's specific pre-construction rules and karst triggers, for one of the Nashville metro's fastest-growing counties.

Wilson County has been one of the fastest-growing counties in the Nashville metro, with Mt. Juliet and Lebanon leading the surge. Building here means the state permit plus a local land-disturbance program, and the local program differs depending on whether your site is in the unincorporated county, the City of Lebanon, or the City of Mt. Juliet.

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The state permit is your baseline

Anywhere in Tennessee, a project that disturbs one acre or more (including a lot inside a larger common plan of development) needs coverage under the Construction General Permit (TNR100000): a written SWPPP, a Notice of Intent filed in MyTDEC (form CN-0940), twice-weekly inspections documented on form CN-1173, and a Notice of Termination at closeout. If that is new to you, start with Do I need a SWPPP in Tennessee? and how to file your NOI.

Wilson County's Land Disturbance Permit

For unincorporated county sites, the Wilson County Stormwater Department issues a Land Disturbance Permit. A few specifics: the permit becomes void if substantial work does not begin within 180 days of issuance or is not complete within 18 months of the start of construction; the county requires a minimum 30-foot stream buffer; and it commonly requires performance security tied to an itemized construction cost estimate, released only on submittal of as-built plans certified by a registered engineer. Inspections are performed by someone holding the TDEC Level I EPSC certification.

Inside the City of Lebanon

Lebanon runs its own land-disturbance program, and its pre-construction meeting is specific about who attends: the civil engineer, contractor, owner representative, and the TDEC Level 1 certified EPSC inspector. All erosion and sediment controls must be installed before any grading or stockpiling. If the site is over one acre, you must provide the NPDES tracking number from your state Notice of Coverage before the grading permit can be issued. Two triggers to watch: an Aquatic Resource Alteration Permit if the work affects streams, springs, or wetlands, and a Class V Injection Well permit if a karst feature (sinkhole or cave) is directly impacted.

Inside Mt. Juliet

Mt. Juliet administers stormwater and land disturbance under its own Land Development Code (Appendix C sets the stormwater design standards). Given how fast Mt. Juliet has grown, confirm the current submittal process directly with the city.

What this means for your SWPPP

Identify your jurisdiction first, then line your SWPPP up with the local program: the county's buffer and performance security, Lebanon's pre-construction attendees and karst triggers, or Mt. Juliet's code. If a sinkhole or stream is in play, sort out ARAP or injection-well permitting early, because those are separate state approvals.

From the engineer who built this: SWPPP Builder was created by a practicing Tennessee civil engineer, not a national template service. The generated plan is written to the current state Construction General Permit and to the TDEC forms your reviewer and inspector actually expect to see, so it reads like something that belongs on a Tennessee jobsite. Local programs still vary block to block, so the plan is built to be reviewed, signed, and adjusted to your specific site rather than filed blind.

Getting your Wilson County SWPPP

SWPPP Builder generates a field-ready Tennessee SWPPP built to the state Construction General Permit in about an hour. Pricing is flat and posted up front: $349 for a standard non-engineered contractor SWPPP, $99 for a single-family homebuilder plan (built on TDEC form CN-1249), and $499 when your site needs engineered or pre-approved plans. That is a fraction of the $1,500 to $5,000 a consultant typically charges, and you keep the file in your account to reuse and update as the job changes.

Common questions

How long is a Wilson County Land Disturbance Permit good for?

It becomes void if substantial work does not begin within 180 days of issuance or is not complete within 18 months of the start of construction. Confirm timing with the county Stormwater Department.

Who has to attend Lebanon's pre-construction meeting?

The City of Lebanon requires the civil engineer, contractor, owner representative, and the TDEC Level 1 certified EPSC inspector. All erosion and sediment controls must be installed before grading begins.

What if my Wilson County site has a sinkhole?

If a karst feature such as a sinkhole or cave is directly impacted, the state requires a Class V Injection Well permit, and an Aquatic Resource Alteration Permit may apply if streams, springs, or wetlands are affected. Sort these out early.

Is Mt. Juliet different from the county?

Yes. Mt. Juliet administers land disturbance under its own Land Development Code (Appendix C for stormwater design). Confirm the current process with the city.

This guide is general information for Tennessee construction sites, not legal, engineering, or regulatory advice. Requirements change and local rules vary; always confirm current details with TDEC and your local permitting authority before relying on them. Fees, thresholds, and contacts cited here can change, so verify them with the office directly.